Contagion: Scientific Periodical Journal of Public Health and Coastal Health
Vol 8, No 2 (2026): Contagion

Effect of Virgin Coconut Oil Supplementation on Immune Function in a Rat Model of Physical Exercise

Fajar Apollo Sinaga (Universitas Negeri Medan)
Rika Nailuvar Sinaga (Universitas Negeri Medan)
Alin Anggreni Ginting (Universitas Negeri Medan)
Ayu Elvana (Universitas Negeri Medan)



Article Info

Publish Date
30 Jun 2026

Abstract

Physical exercise can induce physiological stress that triggers inflammatory responses, marked by increased levels of proinflammatory cytokines and acute-phase proteins. Virgin Coconut Oil (VCO) contains medium-chain fatty acids that are known to possess anti-inflammatory and immunomodulatory properties, which may help regulate immune responses caused by physical activity. This study aimed to evaluate the effect of VCO supplementation on immune function by examining serum levels of Interleukin-6 (IL-6), Tumor Necrosis Factor-α (TNF-α), and C-Reactive Protein (CRP) in a rat model subjected to physical exercise. An experimental approach was conducted using rats divided into four groups, consisting of a control group and several VCO-treated groups undergoing physical exercise. VCO was administered orally at varying doses throughout the exercise intervention period. At the end of the treatment, blood samples were collected, and serum concentrations of IL-6, TNF-α, and CRP were analyzed using immunoassay techniques. The data were evaluated descriptively to observe trends among the treatment groups. The findings demonstrated a consistent decrease in IL-6, TNF-α, and CRP levels in rats receiving VCO supplementation compared to the control group. The most pronounced reduction in all inflammatory markers was observed in the group receiving the highest dose of VCO, indicating a dose-dependent effect. These results suggest that VCO supplementation effectively attenuated exercise-induced inflammatory responses. Overall, VCO supplementation shows potential immunomodulatory and anti-inflammatory effects in rats exposed to physical exercise, as evidenced by reduced levels of IL-6, TNF-α, and CRP. VCO may therefore be considered a functional nutritional supplement to support immune balance during physical activity. However, further studies are needed to confirm these findings and to clarify the underlying biological mechanisms involved. Keywords: Virgin Coconut Oil, Physical Exercise, Immune Function, Inflammation, Interleukin-6, Tumor Necrosis Factor-α, C-Reactive Protein, Rat Model

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Journal Info

Abbrev

contagion

Publisher

Subject

Health Professions Public Health

Description

Contagion: Scientific Periodical Journal of Public Health and Coastal Health, A Scientific Periodic Journal of Public Health published by the Public health Study Program of The Faculty of Public Health UINSU Medan. This Journal prioritiez the collaboration of lecturers and students with scope of the ...